Have you Googled this question? There are literally thousands of answers to this question online already.

EnderMB
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2013-03-04T10:12:53Z —
#3

This question has been asked and answered many, many times before. Please read the [SEO FAQ or use the [url=http://www.sitepoint.com/forums/search.php]Search](http://www.sitepoint.com/forums/showthread.php?182915-FAQ-Search-Engine-Optimization) facility to find past discussions.

If, after reading those, you've still got any specific questions that haven't been answered, please do come back and start a new thread. In the meantime, I'm closing this one.